I have these three stamps and have tried my best to identify them.
The first one I believe to be 1888 Bamra and SG1.(Not too sure about the last character)
The second is a pair of 1890/93 SG10 1/4 anna with different centre motifs.
The last stamp is possibly from Bundi and has a red overprint?. Could it be an official stamp as I cannot make out the wording. Could it be SG O6a ?
Any suggestions would be appreciated as the first stamp could be worth quite a bit if genuine.